Browse free open source Java Libraries and projects below. Use the toggles on the left to filter open source Java Libraries by OS, license, language, programming language, and project status.

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  • 1
    dotNet4Java - .Net for Java

    dotNet4Java - .Net for Java

    The best Java library to work with .Net libraries and frameworks.

    The dotNet4Java is a .Net Runtime Library for Java which helps Java developers work with .Net framework and 3rd party libraries in Java with ease. It is designed to provide a way to interact with applications written in anyone of the .Net languages (such as C#, Visual Basic.Net, Delphi.Net, JScript.Net etc) from Java. Competitive Advantages: - dotNet4Java JAR can be easily added to artefacts repository like maven or ivy. - dotNet4Java is single jar file that can be very easily added to any type of Java project EJB, applet, desktop, console or service. - No extra dll is required when deployed. - Full access to .Net Framework Class Library. - Lightweight and easy to use. - There are tools to import and generate .Net Libraries into Java class files. dotNet4Java can do so much: - Access .Net Framework Class Library. - Access Third Party .Net Libraries. - Access Your .Net Libraries. - Can invoke members of a .Net types. - etc Latest Version: 1.0.1.0
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  • 2

    dribble

    Adds a little bit to a Java 8 stream

    Some utilities for controlling concurrency and buffering when using the Java 8 stream API.
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  • 3
    This set of projects provides shared tools and utility classes for others Java projects. The dutilities project is composed by sub-projects that provides more specific tools: dtools contains utility classes, dswing contains UI components...
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  • 4

    eBook parser library

    Java library for parsing eBook structure

    eBook parser library - Java library, designed for parsing many formats of electronic books
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  • 5
    eCxx

    eCxx

    A C++ library for AVR and NodeMCU

    NOTE: This project is marked with 'Status: Abandoned' on SourceForge because not enough time can be dedicated to this project. However it may still get sporadic commits to the repository. eCxx is a library for AVR and NodeMCU tailored for micro LED displays and lighting effects. eCxx is utilizing Makefile build system. Java and Python based applications/tools are also included to ease the development and debugging process using the host PC. On one side, eCxx supports the original megaAVR series (ATmega328P, ATmega1284P, ATmega2560, ATmega32U4, AT90USB1286, etc.) as well as the new megaAVR 0-Series (ATmega4808, ATmega4809, etc.). On the other side, while eCxx is primarily designed to work in NodeMCU, it should also support other ESP-12 based design as well as ESP-01 based design. The Makefile build system and some of the tools would only run on Linux. However, the library source code should be portable enough to be built using other build systems for AVR and NodeMC
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  • 6
    exchange-core java

    exchange-core java

    Ultra-fast matching engine written in Java based on LMAX Disruptor

    Exchange-core is an open source market exchange core based on LMAX Disruptor, Eclipse Collections (ex. Goldman Sachs GS Collections), Real Logic Agrona, OpenHFT Chronicle-Wire, LZ4 Java, and Adaptive Radix Trees. HFT optimized. Priority is a limit-order-move operation mean latency (currently ~0.5µs). Cancel operation takes ~0.7µs, placing new order ~1.0µs. Pipelined multi-core processing (based on LMAX Disruptor): each CPU core is responsible for certain processing stage, user accounts shard, or symbol order books shard.
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  • 7

    extendedValidation

    BeanValidation extension

    BeanValidation API extension to provide CDI compatible ConstraintValidatorFactory, easy way to set parameters on message constraint and easy API to add non properties file message sources, like DB, external modules, mainframe routines, etc.
    Downloads: 0 This Week
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  • 8
    fastjson

    fastjson

    A fast JSON parser/generator for Java

    Fastjson is a Java library that can be used to quickly convert Java Objects into their JSON representation or convert JSON strings to their equivalent Java object. Based on benchmarks it provides the best performance in both server side and Android client, and can work with arbitrary Java objects, even those pre-existing objects of which you do not have the source code. Fastjson provides a simple conversion method to turn Java objects to JSON and vice versa, with extensive support of Java Generics and arbitrarily complex objects.
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  • 9

    generation-xml

    Java lib for creating XML documents

    xGen is to creating XML what XPath is to reading XML. The string /html/body/div#container/div.menu/ul/li[5] Can be used to create XML. This saves a lot of boilerplate code when generating XML and a templating mechanism is not a good fit for your project.
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  • 10
    genieos

    genieos

    fork of Adobe Genie

    Fork of Adobe Genie from <https://sourceforge.net/adobe/genie/>. The "os" in GenieOS stands for Object Support. I will be adding Page Object and Page Factory (see <http://code.google.com/p/selenium/wiki/PageFactory>) support to GenieOS soon.
    Downloads: 0 This Week
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  • 11
    GeoJSF is a JSF component library to integrate spatial information (especially maps) into existing JavaEE Web applications with JSF technology.
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  • 12
    Geom4J is a computational geometry library for Java. It contains implementation of the most important computational geometry data structures and algorithms coded in pure Java, designed for ease of use and optimized for performance.
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  • 13
    A fluent java interface for streaming structured data and adapters to produce and consume different forms of it.
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  • 14
    guacamole-auth-h2

    guacamole-auth-h2

    H2DB Authentication Plugin for Guacamole

    guacamole-auth-h2 is a Java library for use with the Guacamole web application to provide H2DB based authentication. guacamole-auth-h2 provides an authentication provider which can be set in guacamole.properties to allow H2 authentication of Guacamole users. Works only with guacamole 0.5.0
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  • 15

    gundercrypt [MOVED]

    A CLI text encrypting/ciphering program and library for java

    ** MOVED: to github.com/gundermanc/gundercrypt A CLI text ciphering program and library written in java that makes use of pseudo random numbers and a password (provided by the user) to generate encrypted text by selectively shifting each subsequent letter by a pseudo-random index, encoding it as a letter stored in a hidden position within the String, and then re shifting the encrypted String again by numeric values deduced from a password to provide a dual layer of security. Easily can be imported into any java project or run via shell commands.
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  • 16

    gwt-html5-graph

    GWT Diagram Library Components based on html5/eclipse gef/eclipse emf

    gwt-html5-graph(GWT Diagram Library Components) based on: * Google gwt * html5-canvas: IE9/IE10/firefox/safari/opera/chrome * eclipse-gef: Graphical Editing Framework * eclipse-emf: eclipse Modeling framework< * eclipse-uml2: eclipse UML2 project gwt-html5-graph: html5-based technology, has successfully excellent graphics editing framework Eclipse GEF, model editing framework Eclipse EMF, and the Eclipse UML2 Eclipse EMF-based so successfully transplanted to the GWT platform. Based on gwt-html5-graph, the user may transplant very conveniently the eclipse platform development each kind of graph/modelling application to WEB on, also may develops the new WEB vector graph application based on formidable eclipse platform GEF API and EMF/UML2 API, like each kind of flow chart, engineering plat, UML modelling, GIS and so on. Demo1(GEF Sample): http://euml.trufun.net/drawx/gef-sample/Gef_sample.html
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  • 17

    highfaces

    JSF 2 Chart Component Library based on HighCharts

    JSF 2 Chart Component Library based on HighCharts. HighFaces adds JSF 2 components, with which you can easily create charts from your existing POJOs without that you need to know anything about the JS, Json structures, etc of HighCharts.
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  • 18

    hscommons

    A collection of java utility classes.

    A number of classes that help with common tasks in an application. Currently focused on input and output to/from files. First class is a buffered version of Java's RandomAccessFile class.
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  • 19

    http-client-3-wrapper

    Java wrapper around the old commons-http-client.3.1

    This is a java wrapper around the old commons-http-client.3.1 HTTP client which not developed anymore. The wrapper is using the new HttpClient 4.x and keeps binary compatibility. The intention for developing this wrapper was using Axis 2 for accessing a Microsoft Exchange 2010 server which requires a NTLM2 authentication. Not all methods are implemented, but it works for me. Just remove the old commons-httpclient-3.1.jar and add http-client-3-wrapper to your project.
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  • 20
    i18n4java is an I18N framework for Java to change the way how strings are internationalized. This framework is inspired by QT's I18N framework and uses all features of Java's L10N to get a tiny and clean framework which helps to write clean code.
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  • 21
    iSMSLib is a simple java library to interact with Multitech Multimodem iSMS gateways. I have used it with iSMS-100 and iSMS-800 modems. The majority of this use has been in Afghanistan and I will include tips and tricks I learned.
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  • 22
    iwant
    NOTE: This is a sf.net/subversion clone from https://github.com/wipu/iwant A java-based declarative, multi-threaded and incremental build system that provides a fluent java API for writing build programs. Can use ant tasks and ant and shell scripts as backend.
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  • 23
    Meginajums uztaisit izstazhu vadibas bazes sistemu, kuru butu iespejams pielietot izstazhu notikumu parvaldibai
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  • 24
    A task scheduler written in java, supporting outlook style recurrence patterns.
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  • 25
    j2docx

    j2docx

    JAVA API to write MS Word 2007/2010 docx documents

    J2DOCX-“Java to docx” is a java approach to write the contents programmatically over the Microsoft docx documents and to manipulate the document. This API comprises set of useful funtions to work with docx. The version 2.1 supports writing all sort of of text,images,hyperlink and custom xml structures. About the Developer: This API was created by Vinothkumar P T, A Java Developer, Software Architect with over 10 years of experience in IT industry and currently work for Cognizant technology solutions US Corporation.
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